.first {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.header {
  width: 100%;
  height: 200px;
  background-image: url('https://s1.ljcdn.com/hulk-web/static/m/statics/images/home/head_bg.jpg?version=a5631a9bcb');
  background-repeat: no-repeat;
}
.top {
  width: 100%;
  height: 100px;
  display: flex;
  justify-content: space-between;
}
.button {
  width: 60px;
  height: 30px;
  margin: 10px 10px;
  border: none;
  background: #333;
  opacity: 0.8;
  color: white;
  border-radius: 10px 10px 10px 10px;
}
.user {
  margin-top: 10px;
  color: white;
  font-size: 30px;
}
.input {
  width: 90%;
  height: 40px;
  margin-left: 5%;
  margin-top: 50px;
  border: none;
  text-indent: 2em;
}
.search {
  position: absolute;
  left: 7%;
  margin-top: 60px;
}
.main {
  width: 100%;
  flex: 1;
}
